Minecraft Survival - Test 0.30

remains a fascinating "time capsule" of the game's earliest survival concepts, showing how a simple point-based combat test evolved into the complex world-building phenomenon we play today. Java Edition Survival Test - Minecraft Wiki

The worlds in 0.30 were small and bordered, featuring unique generation quirks like deep "ditches" and flooded caves.

These were the fastest mobs in the game, moving at the same speed as the player. 3. World Generation and Mining